/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package edu.pku.sei.ocl.cst.impl;

import edu.pku.sei.ocl.cst.CSTPackage;
import edu.pku.sei.ocl.cst.LetExpCS;
import edu.pku.sei.ocl.cst.OCLExpressionCS;
import edu.pku.sei.ocl.cst.VariableCS;
import edu.pku.sei.ocl.evaluation.Context;
import edu.pku.sei.ocl.visitor.AbstractOCLVisitor;

import java.util.Collection;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;

import org.eclipse.emf.common.util.EList;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Let Exp CS</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link edu.pku.sei.ocl.cst.impl.LetExpCSImpl#getVariables <em>Variables</em>}</li>
 *   <li>{@link edu.pku.sei.ocl.cst.impl.LetExpCSImpl#getInExpression <em>In Expression</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class LetExpCSImpl extends OCLExpressionCSImpl implements LetExpCS {
	/**
	 * The cached value of the '{@link #getVariables() <em>Variables</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getVariables()
	 * @generated
	 * @ordered
	 */
	protected EList<VariableCS> variables;

	/**
	 * The cached value of the '{@link #getInExpression() <em>In Expression</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getInExpression()
	 * @generated
	 * @ordered
	 */
	protected OCLExpressionCS inExpression;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected LetExpCSImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return CSTPackage.Literals.LET_EXP_CS;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList<VariableCS> getVariables() {
		if (variables == null) {
			variables = new EObjectContainmentEList<VariableCS>(
					VariableCS.class, this, CSTPackage.LET_EXP_CS__VARIABLES);
		}
		return variables;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public OCLExpressionCS getInExpression() {
		return inExpression;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetInExpression(
			OCLExpressionCS newInExpression, NotificationChain msgs) {
		OCLExpressionCS oldInExpression = inExpression;
		inExpression = newInExpression;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this,
					Notification.SET, CSTPackage.LET_EXP_CS__IN_EXPRESSION,
					oldInExpression, newInExpression);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setInExpression(OCLExpressionCS newInExpression) {
		if (newInExpression != inExpression) {
			NotificationChain msgs = null;
			if (inExpression != null)
				msgs = ((InternalEObject) inExpression).eInverseRemove(this,
						EOPPOSITE_FEATURE_BASE
								- CSTPackage.LET_EXP_CS__IN_EXPRESSION, null,
						msgs);
			if (newInExpression != null)
				msgs = ((InternalEObject) newInExpression).eInverseAdd(this,
						EOPPOSITE_FEATURE_BASE
								- CSTPackage.LET_EXP_CS__IN_EXPRESSION, null,
						msgs);
			msgs = basicSetInExpression(newInExpression, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
					CSTPackage.LET_EXP_CS__IN_EXPRESSION, newInExpression,
					newInExpression));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
		case CSTPackage.LET_EXP_CS__VARIABLES:
			return ((InternalEList<?>) getVariables()).basicRemove(otherEnd,
					msgs);
		case CSTPackage.LET_EXP_CS__IN_EXPRESSION:
			return basicSetInExpression(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
		case CSTPackage.LET_EXP_CS__VARIABLES:
			return getVariables();
		case CSTPackage.LET_EXP_CS__IN_EXPRESSION:
			return getInExpression();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
		case CSTPackage.LET_EXP_CS__VARIABLES:
			getVariables().clear();
			getVariables().addAll((Collection<? extends VariableCS>) newValue);
			return;
		case CSTPackage.LET_EXP_CS__IN_EXPRESSION:
			setInExpression((OCLExpressionCS) newValue);
			return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
		case CSTPackage.LET_EXP_CS__VARIABLES:
			getVariables().clear();
			return;
		case CSTPackage.LET_EXP_CS__IN_EXPRESSION:
			setInExpression((OCLExpressionCS) null);
			return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
		case CSTPackage.LET_EXP_CS__VARIABLES:
			return variables != null && !variables.isEmpty();
		case CSTPackage.LET_EXP_CS__IN_EXPRESSION:
			return inExpression != null;
		}
		return super.eIsSet(featureID);
	}

	@Override
	public Object accept(AbstractOCLVisitor v, Context env, Object... argv) {
		if (argv == null || argv.length == 0) {
			return v.visitLetExpCS(this, env);
		} else {
			return v.visitLetExpCS(this, env, argv);
		}
	}
} //LetExpCSImpl
